# Quasiprobability fluctuation theorem behind the spread of quantum information

@inproceedings{Zhang2022QuasiprobabilityFT, title={Quasiprobability fluctuation theorem behind the spread of quantum information}, author={Kun Zhang and Jin Wang}, year={2022} }

Information spreads in time evolution. For example, the quantum correlation decays when the correlated system locally couples to a third party, such as the environment. This simple but important fact is known as the quantum data-processing inequality. Here we theoretically reveal the quantum fluctuation theorem behind the quantum informational inequality. The fluctuation theorem quantitatively predicts the statistics of such process. To fully capture the quantum nature, the fluctuation theorem…

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